package com.neuedu.framework.config;

import com.neuedu.framework.security.filter.JwtAuthenticationTokenFilter;
import com.neuedu.framework.security.handle.AuthenticationEntryPointImpl;
import com.neuedu.framework.security.handle.LogoutSuccessHandlerImpl;

import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.actuate.autoconfigure.security.servlet.EndpointRequest;
import org.springframework.context.annotation.Bean;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.Customizer;
import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;

/**
 * spring security配置
 *
 * @author neuedu
 */
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
@EnableWebSecurity
public class SecurityConfig {

    /**
     * 自定义用户认证逻辑
     */
    @Autowired
    private UserDetailsService userDetailsService;

    /**
     * 认证失败处理类
     */
    @Autowired
    private AuthenticationEntryPointImpl authenticationEntryPoint;

    /**
     * 退出处理类
     */
    @Autowired
    private LogoutSuccessHandlerImpl logoutSuccessHandler;

    /**
     * token认证过滤器
     */
    @Autowired
    private JwtAuthenticationTokenFilter authenticationTokenFilter;

    /**
     * 跨域过滤器
     */
    @Autowired
    private CorsFilter corsFilter;

    private static final String[] BIZ_URLS = {
        "/login",
        "/app/login",
        "/system/user/register",
        "/captchaImage",
        "/webSocket/**",
        "/monitor/operlog/remoteAddr",
            "/common/uploadV5"
    };

    private static final String[] SWAGGER_URLS = {
        "/swagger-ui.html",
        "/doc.html",
        "/swagger-resources/**",
        "/*/api-docs"
    };

    private static final String[] STATIC_URLS = {
        "/",
        "/*.html",
        "/**/*.html",
        "/**/*.css",
        "/**/*.js",
        "/profile/**"
    };

    @Bean
    public BCryptPasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Bean
    public InitializingBean initializingBean() {
        return () -> SecurityContextHolder.setStrategyName(SecurityContextHolder.MODE_INHERITABLETHREADLOCAL);
    }

    /**
     * 由于 Spring Security 创建 AuthenticationManager 对象时，没声明 @Bean 注解，导致无法被注入
     * 通过覆写父类的该方法，添加 @Bean 注解，解决该问题
     */
    @Bean
    public AuthenticationManager authenticationManagerBean(AuthenticationConfiguration authenticationConfiguration) throws Exception {
        return authenticationConfiguration.getAuthenticationManager();
    }

    /**
     * anyRequest          |   匹配所有请求路径
     * access              |   SpringEl表达式结果为true时可以访问
     * anonymous           |   匿名可以访问
     * denyAll             |   用户不能访问
     * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
     * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
     * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
     * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
     * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
     * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
     * permitAll           |   用户可以任意访问
     * rememberMe          |   允许通过remember-me登录的用户访问
     * authenticated       |   用户登录后可访问
     */
    @Bean
    protected SecurityFilterChain filterChain(HttpSecurity httpSecurity) throws Exception {
        // 设置 URL 安全权限
        httpSecurity
            // 开启跨域
            .cors(Customizer.withDefaults())
            // CSRF 禁用，因为不使用 Session
            .csrf(AbstractHttpConfigurer::disable)
            // 一堆自定义的 Spring Security 处理器
            .exceptionHandling(c -> c.authenticationEntryPoint(authenticationEntryPoint))
            .sessionManagement(httpSecuritySessionManagementConfigurer -> httpSecuritySessionManagementConfigurer.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
            // 过滤请求
            .authorizeRequests()
            .requestMatchers(EndpointRequest.toAnyEndpoint()).permitAll()
            // 对于登录login 注册register 验证码captchaImage 允许匿名访问
            .antMatchers(BIZ_URLS).anonymous()
            .antMatchers(HttpMethod.GET, STATIC_URLS).permitAll()
            .antMatchers(SWAGGER_URLS).anonymous()
            .antMatchers("/**/app-o/**").permitAll()
            .antMatchers("/webjars/**").anonymous()
            .antMatchers("/druid/**").anonymous()
            // 除上面外的所有请求全部需要鉴权认证
            .anyRequest().authenticated()
            .and()
            .headers().frameOptions().disable();
        httpSecurity.logout().logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler);
        // 添加JWT filter
        httpSecurity.addFilterBefore(authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
        // 添加CORS filter
        httpSecurity.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class);
        httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);

        return httpSecurity.build();
    }

    @Bean
    public DaoAuthenticationProvider authenticationProvider() {
        DaoAuthenticationProvider provider = new DaoAuthenticationProvider();
        provider.setUserDetailsService(userDetailsService);
        provider.setPasswordEncoder(passwordEncoder());

        return provider;
    }

}
